Principal Investigator(s):United States Department of Commerce. Bureau of the Census

Summary:

For this dataset, congressional district records were
extracted from Summary Tape File 3D files and combined into a single
file with the congressional district as the unit of analysis. While
the 51 STF 3D files contain several levels of geographic
hierarchy--state, congressional district, county or county
equivalent, places with 10,000 or more inhabitants, and minor civil
divisions with 10,000 or more inhabitants--with one file per state,
this extract file presents data for one geographical level, the
congressional district, and... (more info)

For this dataset, congressional district records were
extracted from Summary Tape File 3D files and combined into a single
file with the congressional district as the unit of analysis. While
the 51 STF 3D files contain several levels of geographic
hierarchy--state, congressional district, county or county
equivalent, places with 10,000 or more inhabitants, and minor civil
divisions with 10,000 or more inhabitants--with one file per state,
this extract file presents data for one geographical level, the
congressional district, and contains records for all congressional
districts in the nation in one physical file. The 436 congressional
districts described in the file are defined according to the
boundaries established for the 98th Congress. Summary Tape File 3
consists of detailed tabulations of the nation's population and
housing characteristics and is composed of five parts: STF 3A, STF
3B, STF 3C, STF 3D, and STF 3H. These files contain sample data
inflated to represent the total population but also include
100-percent counts and unweighted sample counts for some variables.
Complete-count data are supplied for demographic characteristics such
as age, race, sex, marital status, and Spanish origin, and for
housing information such as as the number of units at the address,
number of rooms, occupancy status, tenure, property value, and
plumbing facilities. Sample data are provided for other items
including education, language, ancestry, employment, transportation,
and income.

This extract file was prepared by John McAdams,
Associate Professor of Political Science at Marquette University.
Data contained in the file are identical to those supplied by the
Census Bureau in the congressional district-level records of STF 3D
files, and standard Census Bureau technical documentation for STF 3
can be used with the file. The 12,096-character census logical record
is divided into six segments of 2,016 characters each.

Methodology

Sample:
For STF 3 one-half of all housing units and persons in
group quarters in incorporated places of less than 2,500 persons were
included in the sample. In all other places, one-sixth of the housing
units or persons in group quarters were sampled. When both sampling
rates were taken into account, approximately 19 percent of the
nation's housing units were included in the census sample.